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Genetic bipolar

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https://www.readbyqxmd.com/read/28550016/genomic-analysis-of-genotype-by-social-environment-interaction-for-drosophila-aggressive-behavior
#1
Palle Duun Rohde, Bryn Gaertner, Kirsty Wards, Peter Sørensen, Trudy F C Mackay
Human psychiatric disorders such as schizophrenia, bipolar disorder and attention-deficit/hyper-activity disorder often include adverse behaviors including increased aggressiveness. Individuals with psychiatric disorders often exhibit social withdrawal, which can further increase the probability of conducting a violent act. Here, we used the inbred, sequenced lines of the Drosophila Genetic Reference Panel (DGRP) to investigate the genetic basis of variation in male aggressive behavior for flies reared in a socialized and socially isolated environment...
May 26, 2017: Genetics
https://www.readbyqxmd.com/read/28548579/genetic-variation-of-the-mu-opioid-receptor-oprm1-and-dopamine-d2-receptor-drd2-is-related-to-smoking-differences-in-patients-with-schizophrenia-but-not-bipolar-disorder
#2
Mika Hirasawa-Fujita, Michael J Bly, Vicki L Ellingrod, Gregory W Dalack, Edward F Domino
It is not known why mentally ill persons smoke excessively. Inasmuch as endogenous opioid and dopaminergic systems are involved in smoking reinforcement, it is important to study mu opioid receptor (OPRM1) A118G (rs1799971), dopamine D2 receptor (DRD2) Taq1A (rs1800497) genotypes, and sex differences among patients with schizophrenia or bipolar disorder. Smokers and nonsmokers with schizophrenia (n=177) and bipolar disorder (n=113) were recruited and genotyped. They were classified into three groups: current smoker, former smoker, and never smoker by tobacco smoking status self-report...
2017: Clinical Schizophrenia & related Psychoses
https://www.readbyqxmd.com/read/28548194/-heritability-and-genetic-comorbidity-of-attention-deficit-disorder-with-hyperactivity
#3
Giannina Puddu, Paula Rothhammer, Ximena Carrasco, Francisco Aboitiz, Francisco Rothhammer
This review aims to summarize information about the genetic etiology of attention deficit disorder with hyperactivity (ADHD), with particular reference to the contributions of our research group. We also discuss the genetic comorbidity estimated from genome-wide single nucleotide polymorphisms (SNP´s) between ADHD and major psychiatric disorders such as schizophrenia (E), major depressive disorder (MDD), bipolar disorder (BD) and autism spectrum disorders (ASD). A high genetic comorbidity was found between E and BD (46%), a moderate comorbidity between MDD and E, MDD and BD and MDD and ADHD (18%, 22% and 10% respectively) and a low comorbidity between E and ASD (2...
March 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28544426/the-catechol-o-methyltransferase-comt-val158met-genotype-modulates-working-memory-related-dorsolateral-prefrontal-response-and-performance-in-bipolar-disorder
#4
K W Miskowiak, H L Kjaerstad, M M Støttrup, A M Svendsen, K M Demant, L K Hoeffding, T M Werge, K E Burdick, K Domschke, A F Carvalho, E Vieta, M Vinberg, L V Kessing, H R Siebner, J Macoveanu
OBJECTIVES: Cognitive dysfunction affects a substantial proportion of patients with bipolar disorder (BD), and genetic-imaging paradigms may aid in the elucidation of mechanisms implicated in this symptomatic domain. The Val allele of the functional Val158Met polymorphism of the catechol-O-methyltransferase (COMT) gene is associated with reduced prefrontal cortex dopamine and exaggerated working memory-related prefrontal activity. This functional magnetic resonance imaging (fMRI) study investigated for the first time whether the COMT Val158Met genotype modulates prefrontal activity during spatial working memory in BD...
May 23, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28544350/association-between-the-zinc-finger-protein-804a-znf804a-gene-and-the-risk-of-schizophrenia-and-bipolar-i-disorder-across-diagnostic-boundaries
#5
Ji Hyun Baek, Kyooseob Ha, Yongkang Kim, So Yung Yang, Eun-Young Cho, Yujin Choi, Seunghyong Ryu, Yu-Sang Lee, Taesung Park, Kyung Sue Hong
OBJECTIVES: In this study, we aimed to determine the role of genetic variations within the zinc finger protein 804A (ZNF804A) gene, a candidate for a psychosis risk-conferring gene, in the development of schizophrenia (SZ) and bipolar disorder (BP) in the Korean population. METHODS: A total of 921 patients with SZ, bipolar I (BP-I) and II (BP-II) disorder, and 502 control subjects participated in the study. Twenty-one tag single nucleotide polymorphisms (SNPs) across the genomic region of ZNF804A and seven reference SNPs based on previous reports were genotyped...
May 22, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28538982/association-of-late-adolescent-personality-with-risk-for-subsequent-serious-mental-illness-among-men-in-a-swedish-nationwide-cohort-study
#6
Joseph F Hayes, David P J Osborn, Glyn Lewis, Christina Dalman, Andreas Lundin
Importance: Understanding of personality as an independent risk factor for serious mental illness (SMI) remains limited. Recently, overlap between the polygenic basis for specific personality traits and specific SMIs has been identified. Objective: To determine the association of the adolescent personality domains of social maturity, mental energy, and emotional stability with later diagnosis of SMI. Design, Setting, and Participants: This longitudinal cohort study enrolled Swedish male military conscripts aged 18 or 19 years from January 1, 1974, through December 31, 1997...
May 24, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28531561/a-meta-analysis-of-neurocognition-in-youth-with-familial-high-risk-for-bipolar-disorder
#7
E Bora, A Özerdem
OBJECTIVE: Neuropsychological impairment, including deficits in social cognition is evident in subjects at genetic high-risk for psychosis. However, findings in youth at genetic risk to bipolar disorder (BP) have been suggested to be less supportive of premorbid deficits. We aimed to conduct a meta-analysis of cognitive deficits in youth with familiar risk for bipolar disorder (FHR-BD). METHODS: A novel meta-analysis of FHR-BD (mean age 10-25), including 18 studies (786 offsprings/siblings of patients with BD and 794 healthy controls), was conducted...
March 3, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28525603/genome-wide-association-study-of-psychosis-proneness-in-the-finnish-population
#8
Alfredo Ortega-Alonso, Jesper Ekelund, Antti-Pekka Sarin, Jouko Miettunen, Juha Veijola, Marjo-Riitta Järvelin, William Hennah
The current study examined quantitative measures of psychosis proneness in a nonpsychotic population, in order to elucidate their underlying genetic architecture and to observe if there is any commonality to that already detected in the studies of individuals with overt psychotic conditions, such as schizophrenia and bipolar disorder. Heritability, univariate and multivariate genome-wide association (GWAs) tests, including a series of comprehensive gene-based association analyses, were developed in 4269 nonpsychotic persons participating in the Northern Finland Birth Cohort 1966 study with information on the following psychometric measures: Hypomanic Personality, Perceptual Aberration, Physical and Social Anhedonia (also known as Chapman's Schizotypia scales), and Schizoidia scale...
May 19, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28516971/salivary-biomarkers-and-proteomics-future-diagnostic-and-clinical-utilities
#9
M Castagnola, E Scarano, G C Passali, I Messana, T Cabras, F Iavarone, G Di Cintio, A Fiorita, E De Corso, G Paludetti
Saliva testing is a non-invasive and inexpensive test that can serve as a source of information useful for diagnosis of disease. As we enter the era of genomic technologies and -omic research, collection of saliva has increased. Recent proteomic platforms have analysed the human salivary proteome and characterised about 3000 differentially expressed proteins and peptides: in saliva, more than 90% of proteins in weight are derived from the secretion of three couples of "major" glands; all the other components are derived from minor glands, gingival crevicular fluid, mucosal exudates and oral microflora...
April 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28515818/pharmacogenomic-testing-for-psychotropic-medication-selection-a-systematic-review-of-the-assurex-genesight-psychotropic-test
#10
(no author information available yet)
BACKGROUND: A large proportion of the Ontario population lives with a diagnosed mental illness. Nearly 5% of Ontarians have major depressive disorder, and another 5% have another type of depressive disorder, bipolar disorder, schizophrenia, anxiety, or some other disorder not otherwise specified. Medications are commonly used to treat mental illness, but choosing the right medication for each patient is challenging, and more than 40% of patients discontinue their medication within 90 days because of adverse effects or lack of response...
2017: Ontario Health Technology Assessment Series
https://www.readbyqxmd.com/read/28506622/meta-analyses-of-reln-variants-in-neuropsychiatric-disorders
#11
Na Chen, Yanping Bao, Yanxue Xue, Yan Sun, Die Hu, Shiqiu Meng, Lin Lu, Jie Shi
Reelin is a critical extracellular matrix glycoprotein and implicated in neurodevelopment and psychiatric disorders in animal model studies. The genetic polymorphism of RELN has also been reported to be associated with several psychiatric disorders, but the results remain controversial. Here, we conducted meta-analyses of RELN gene SNPs and related neuropsychiatric disorders (schizophrenia, autistic spectrum disorders, attention-deficit hyperactivity disorder, Alzheimer's disease and bipolar disorders). A total of 12 SNPs (rs736707, rs362691, rs607755, rs2229864, rs7341475, rs262355, rs362719, rs11496125, g...
May 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28499209/precursors-in-adolescence-of-adult-onset-bipolar-disorder
#12
Ayako Hiyoshi, Julia A Sabet, Hugo Sjöqvist, Carren Melinder, Robert J Brummer, Scott Montgomery
BACKGROUND: Although the estimated contribution of genetic factors is high in bipolar disorder, environmental factors may also play a role. This Swedish register-based cohort study of men examined if physical and psychological characteristics in late adolescence, including factors previously linked with bipolar disorder (body mass index, asthma and allergy), are associated with subsequent bipolar disorder in adulthood. Unipolar depression and anxiety are analysed as additional outcomes to identify bipolar disorder-specific associations...
April 29, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28498595/etiology-in-psychiatry-embracing-the-reality-of-poly-gene-environmental-causation-of-mental-illness
#13
Rudolf Uher, Alyson Zwicker
Intriguing findings on genetic and environmental causation suggest a need to reframe the etiology of mental disorders. Molecular genetics shows that thousands of common and rare genetic variants contribute to mental illness. Epidemiological studies have identified dozens of environmental exposures that are associated with psychopathology. The effect of environment is likely conditional on genetic factors, resulting in gene-environment interactions. The impact of environmental factors also depends on previous exposures, resulting in environment-environment interactions...
June 2017: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
https://www.readbyqxmd.com/read/28497736/-implication-of-human-endogenous-retroviruses-in-schizophrenia-and-bipolar-disorder
#14
Pierre Ellul, Laurent Groc, Marion Leboyer
Schizophrenia and bipolar disorder are neuropsychiatric disorders of unknown origin. It seems that these two disorders share some common etiopathogenic mechanisms including genetic, environmental and inflammatory ones. Reactivation of the human endogenous retrovirus type W (HERV-W) can be a shared element in the pathophysiology of schizophrenia and bipolar disorder, linked to immuno-genetic and environment risk factors. We will present studies that have highlighted the presence of HERV-W in schizophrenic and bipolar disorder patients...
April 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28495490/further-evidence-for-the-association-between-lrp8-and-schizophrenia
#15
Xiao Xiao, Hao Yu, Jun Li, Lu Wang, Lingyi Li, Hong Chang, Dai Zhang, Weihua Yue, Ming Li
Previous studies (including genome-wide association study (GWAS) and candidate gene studies) have revealed the important roles of genetic risk factors in schizophrenia, and RELN has been identified as a risk gene for this illness. We recently found that the low-density lipoprotein receptor-related protein 8 (LRP8), a receptor of Reelin (the protein encoded by RELN), was significantly associated with schizophrenia and bipolar disorder in European populations. To further enhance our understanding of its role in the risk of psychiatric illnesses, we conducted meta-analyses of a higher density of single nucleotide polymorphisms (SNPs, N=173) in LRP8 to understand their associations with schizophrenia in much larger samples (39,400 cases and 50,357 controls) from populations of European, Chinese and African American ancestries...
May 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28494468/genes-involved-in-neurodevelopment-neuroplasticity-and-bipolar-disorder-cacna1c-chrna1-and-mapk1
#16
Marco Calabrò, Laura Mandelli, Concetta Crisafulli, Antonella Sidoti, Tae-Youn Jun, Soo-Jung Lee, Changsu Han, Ashwin A Patkar, Prakash S Masand, Chi-Un Pae, Alessandro Serretti
BACKGROUND: Bipolar disorder (BPD) is a common and severe mental disorder. The involvement of genetic factors in the pathophysiology of BPD is well known. In the present study, we tested the association of several single-nucleotide polymorphisms (SNPs) within 3 strong candidate genes (CACNA1C, CHRNA7, and MAPK1) with BPD. These genes are involved in monoamine-related pathways, as well as in dendrite development, neuronal survival, synaptic plasticity, and memory/learning. METHODS: One hundred and thirty-two subjects diagnosed with BPD and 326 healthy controls of Korean ancestry were genotyped for 40 SNPs within CACNA1C, CHRNA17, and MAPK1...
May 12, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/28479278/the-relationship-between-genetic-risk-variants-with-brain-structure-and-function-in-bipolar-disorder-a-systematic-review-of-genetic-neuroimaging-studies
#17
REVIEW
Licia P Pereira, Cristiano A Köhler, Rafael T de Sousa, Marco Solmi, Bárbara P de Freitas, Michele Fornaro, Rodrigo Machado-Vieira, Kamilla W Miskowiak, Eduard Vieta, Nicola Veronese, Brendon Stubbs, André F Carvalho
Genetic-neuroimaging paradigms could provide insights regarding the pathophysiology of bipolar disorder (BD). Nevertheless, findings have been inconsistent across studies. A systematic review of gene-imaging studies involving individuals with BD was conducted across electronic major databases from inception until January 9th, 2017. Forty-four studies met eligibility criteria (N=2122 BD participants). Twenty-six gene variants were investigated across candidate gene studies and 4 studies used a genome-wide association approach...
May 4, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28476640/pathophysiology-in-the-comorbidity-of-bipolar-disorder-and-alzheimer-s-disease-pharmacological-and-stem-cells-approaches
#18
REVIEW
Juliana da Cruz Corrêa-Velloso, Maria Carolina Bittencourt Gonçalves, Yahaira Naaldijk, Ágatha Oliveira-Giacomelli, Micheli Mainardi Pillat, Henning Ulrich
Neuropsychiatric disorders involve various pathological mechanisms, resulting in neurodegeneration and brain atrophy. Neurodevelopmental processes have shown to be critical for the progression of those disorders, which are based on genetic and epigenetic mechanisms as well as on extrinsic factors. We review here common mechanisms underlying the comorbidity of Bipolar Disorders and Alzheimer's Disease, such as aberrant neurogenesis and neurotoxicity, reporting current therapeutic approaches. The understanding of these mechanisms precedes stem cell-based strategies as a new therapeutic possibility for treatment and prevention of Bipolar and Alzheimer's Diseases progression...
May 2, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28474173/-genetics-of-bipolar-disorder
#19
REVIEW
M Budde, A J Forstner, K Adorjan, S K Schaupp, M M Nöthen, T G Schulze
Bipolar disorder (BD) has a multifactorial etiology. Its development is influenced by genetic as well as environmental factors. Large genome-wide association studies (GWAS), in which genetic risk allelic variants for the disorder could be replicated for the first time, marked the breakthrough in the identification of the responsible risk genes. In addition to these common genetic variants with moderate effects identified by GWAS, rare variants with a higher penetrance are expected to play a role in disease development...
May 4, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28470927/systematic-assessment-of-environmental-risk-factors-for-bipolar-disorder-an-umbrella-review-of-systematic-reviews-and-meta-analyses
#20
REVIEW
Beatrice Bortolato, Cristiano A Köhler, Evangelos Evangelou, Jordi León-Caballero, Marco Solmi, Brendon Stubbs, Lazaros Belbasis, Isabella Pacchiarotti, Lars V Kessing, Michael Berk, Eduard Vieta, André F Carvalho
OBJECTIVES: The pathophysiology of bipolar disorder is likely to involve both genetic and environmental risk factors. In our study, we aimed to perform a systematic search of environmental risk factors for BD. In addition, we assessed possible hints of bias in this literature, and identified risk factors supported by high epidemiological credibility. METHODS: We searched the Pubmed/MEDLINE, EMBASE and PsycInfo databases up to 7 October 2016 to identify systematic reviews and meta-analyses of observational studies that assessed associations between putative environmental risk factors and BD...
May 3, 2017: Bipolar Disorders
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